In the late 1970’s, the 53M (250K) aerostat was replaced with TCOM’s next generation aerostat system (called the 365K at the time and would be considered a 67M with today’s model number convention where the M would represent the approximate length of the aerostat in meters) and testing/evaluation of this new, larger aerostat continued.
In the early 1980’s, this same Bahamas test site would be transformed into the U.S. Coast Guard’s LASS (Low Altitude Surveillance System) that used a radar payload to search for drug smugglers bringing illegal drugs into the U.S. The first anti-drug aerostat went operational in 1985 at High Rock Grand Bahama Island. The second site was built at Fort Huachuca, Arizona in 1986 which was later named a TARS site. Customs began seeking proposal requests from contractors for these balloons in 1987. Overall responsibility for the program fell to Customs and the Coast Guard, until congressional language in 1991 and 1992 transferred management to the Defense Department, with the Air Force as executive agent.